545515556 has 24 divisors (see below), whose sum is σ = 989802240. Its totient is φ = 262792800.

The previous prime is 545515519. The next prime is 545515559. The reversal of 545515556 is 655515545.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (545515559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 18791 + ... + 38001.

It is an arithmetic number, because the mean of its divisors is an integer number (41241760).

Almost surely, 2^545515556 is an apocalyptic number.

It is an amenable number.

545515556 is a deficient number, since it is larger than the sum of its proper divisors (444286684).

545515556 is a wasteful number, since it uses less digits than its factorization.

545515556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19475 (or 19473 counting only the distinct ones).

The product of its digits is 375000, while the sum is 41.

The square root of 545515556 is about 23356.2744460669. The cubic root of 545515556 is about 817.0884028773.

The spelling of 545515556 in words is "five hundred forty-five million, five hundred fifteen thousand, five hundred fifty-six".